User Session Identification
 
 
  The following attributes are used to determine the Layer 2 sessions that are
   to be terminated: 
    - NAS-Port—the interface index of the port that the session is connected
     to. 
- Calling-Station-Id—The ASCII representation of the MAC address of the
     session to be terminated. If no NAS-Port attribute is present, then all sessions with the
     specified MAC address are terminated regardless of what port(s) the sessions are connected to. 
- Enterasys Auth-Client-Type—One or more of these vendor-specific
     attributes (VSA) can be specified to indicate which authentication clients are to be affected.
     Valid values are: 1-dot1x, 2-pwa, 3-macauth. If this attribute is not present, then all
     sessions with the specified MAC address and/or port are affected. 
All included attributes must match for the request to be processed. Additional attributes
   that are not understood by the DA controller in this context cause a failure of this disconnect
   request.